Though mostly teaching math at VWO students (class 1-5) Bert's math website support about 1400 students aged 11-18 at the CSG Het Noordik secondary school in the Netherlands. The site offers extra math problems to prepare for tests.

chemical_lover's blog: "I hate to define myself or say this is what I am. I think far too many people will make judgements about me based on a few words rather than taking the time to read my journal and get to see what I am thinking. That said I am a student at the University of Waterloo taking Chemistry..."

Gretchen, aka gem. 21. English major. Writer/aspiring author. Closet eccentric. Occasionally obsessive. Introverted, shy, introspective, often downright mopey. Enjoys a good laugh, a weird movie, live music, and chocolate. Has no idea what she's doing with her life.

Paul Stevens is an associate editor at Tor and Forge Books, acquiring and editing everything from science fiction and fantasy to Middle Eastern women's fiction. He also has this cool Conceptis Puzzles linked from his "Distractions" side menue

Thomas Snyder spent his entire childhood "growing up in the suburbs of Buffalo, NY," which means he has "developed a thick skin after surviving numerous blizzards, multiple Super Bowl defeats, an obvious forward lateral, and a clear crease violation in triple overtime."

SquarO is new puzzle game Invented by Marc Lebel, a devoted Sudoku fan from France. Now also with an English version, squaro.fr offers free SquarO puzzles for online play using its own Flash application. Since the beginning of 2007, Lebel says, some French newspapers have decided to publish SquarO's grids.

Puztime is Gakken’s comprehensive online puzzle portal designed for puzzle lovers all over the world. offers a variety of puzzles including unique variations of Number Place, Illust Logic puzzles that reveal whimsical images when completed, Cross Sums with Chinese characters, mazes and much more.

Join the great Quizzing community of CaesarsQuiz.com and fight against your friends. Use your head to build your empire, and increase your culture every day: it’s about 2 minutes of pure fun, and you may even win great prizes! And best of all, CaesarsQuiz is 100% free!

A great Sudoku source By Gideon Greenspan, a self-employed software and web developer living in Tel Aviv, and Rachel Lee. Greenspan has a PhD in Computer Science, specializing in bioinformatics. He was born in the UK and emigrated to Israel in 2000.

A collection of mind-blowing Brain Teasers, quiz questions and psychometric tests, all designed to stretch your wits to the limit and beyond from this prolific author of puzzle books, IQ Tests and trivia quizzes.

Everything there is to know about Sudoku on the world's most popular online encyclopedia - Rules and terminology, Solution methods, Difficulty ratings, Construction, Variants, Mathematics of Sudoku, History, Popularity in the media, References and External links.

This page broadens the arena of argumentation in natural language to address the nature and contexts of good reasoning. Includes everything from formal logic and rhetoric resources to links about reasoning in specific contexts.